fix(gov): revert duplicate amino path

Revert PR #44 because it can cause consensus breaking when the network
is a mix of versions 1.0.3 and <1.0.3.
Also the legacy amino path are more compliant with existing clients
configuration.

x/gov/types/codec.go

@@ -14,11 +14,11 @@ import (
 // governance module.
 func RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
 	cdc.RegisterInterface((*Content)(nil), nil)
-	cdc.RegisterConcrete(&MsgSubmitProposal{}, "govgen/MsgSubmitProposal", nil)
-	cdc.RegisterConcrete(&MsgDeposit{}, "govgen/MsgDeposit", nil)
-	cdc.RegisterConcrete(&MsgVote{}, "govgen/MsgVote", nil)
-	cdc.RegisterConcrete(&MsgVoteWeighted{}, "govgen/MsgVoteWeighted", nil)
-	cdc.RegisterConcrete(&TextProposal{}, "govgen/TextProposal", nil)
+	cdc.RegisterConcrete(&MsgSubmitProposal{}, "cosmos-sdk/MsgSubmitProposal", nil)
+	cdc.RegisterConcrete(&MsgDeposit{}, "cosmos-sdk/MsgDeposit", nil)
+	cdc.RegisterConcrete(&MsgVote{}, "cosmos-sdk/MsgVote", nil)
+	cdc.RegisterConcrete(&MsgVoteWeighted{}, "cosmos-sdk/MsgVoteWeighted", nil)
+	cdc.RegisterConcrete(&TextProposal{}, "cosmos-sdk/TextProposal", nil)
 }
 
 func RegisterInterfaces(registry types.InterfaceRegistry) {

x/gov/types/msgs_test.go

@@ -64,7 +64,7 @@ func TestMsgDepositGetSignBytes(t *testing.T) {
 	msg := NewMsgDeposit(addr, 0, coinsPos)
 	res := msg.GetSignBytes()
 
-	expected := `{"type":"govgen/MsgDeposit","value":{"amount":[{"amount":"1000","denom":"stake"}],"depositor":"cosmos1v9jxgu33kfsgr5","proposal_id":"0"}}`
+	expected := `{"type":"cosmos-sdk/MsgDeposit","value":{"amount":[{"amount":"1000","denom":"stake"}],"depositor":"cosmos1v9jxgu33kfsgr5","proposal_id":"0"}}`
 	require.Equal(t, expected, string(res))
 }
 
@@ -171,6 +171,6 @@ func TestMsgSubmitProposal_GetSignBytes(t *testing.T) {
 		bz = msg.GetSignBytes()
 	})
 	require.Equal(t,
-		`{"type":"govgen/MsgSubmitProposal","value":{"content":{"type":"govgen/TextProposal","value":{"description":"abcd","title":"test"}},"initial_deposit":[]}}`,
+		`{"type":"cosmos-sdk/MsgSubmitProposal","value":{"content":{"type":"cosmos-sdk/TextProposal","value":{"description":"abcd","title":"test"}},"initial_deposit":[]}}`,
 		string(bz))
 }